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  1. Sarah Szabo

    Stair Light/Motion Sensor

    I'm looking to build a simple circuit that triggers a red LED strip to light stairs at night since my mom has trouble going down the stairs. A PIR sensor such as...
  2. Sarah Szabo

    What to Do With a Lot of Salvaged Speakers?

    I have taken apart a few old TV's and other devices and have acquired a decent quantity (About 6-8) of (8 & 16) ohm speakers. The wattage differs for each set, the larger centre ones are 10W, the left and right speakers are both 5W. I know that speakers need a cabinet to work properly (They're...
  3. Sarah Szabo

    Making a Thompson's Coil

    I was thinking of replacing the PVC core with something more inductive like EMT (Steel) conduit like this: https://www.homedepot.com/p/1-in-EMT-Conduit-101568/100400409
  4. Sarah Szabo

    Making a Thompson's Coil

    Thanks for your reply. It was really insightful. I'm somewhat new to electronics, but I've done some fun things with it, and it's already been rather useful to me as a skill. (I was able to repair an old turntable, and wire up new lights for my mom's car among other things, and I plan on making...
  5. Sarah Szabo

    Repairing an Old Turntable?

    One of the wires (Which is a male coming from the circuitboard) needs to be replaced, but I'm uncertain exactly how to solder the new wire. I'm familiar with soldering general wires and have done so for various projects, but I've never done soldering on audio cables. I'm guessing just do the...
  6. Sarah Szabo

    Making a Thompson's Coil

    One thing that I noticed is that in this design, the ferromagnetic core is not removable (Or else short circuit), whereas other designs had a removable central stalk. I suppose that the wires were wrapped around their iron cores and the central stalk was detachable (Although, the fields would...
  7. Sarah Szabo

    Making a Thompson's Coil

    I'm interested in making a Thompson's Coil after seeing my University's physics II (EM) professor demonstrate Faraday's Law to us using it. It seems like a fun device to demonstrate various principles of Electromagnetism to lay people (Induced Voltage by Faraday's Law, Resistive Heating...
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